allis chalmers d12

1959 - 1968
D Series
Row-Crop tractor

Engine options
Allis-Chalmers 2.3L 4-cyl gasoline
Allis-Chalmers 2.4L 4-cyl gasoline

Engine Detail
Allis-Chalmers
gasoline
4-cylinder
liquid-cooled vertical L-head
Original engine, used until 149 ci engine appeared in 1961.
Displacement	138.7 ci 2.3 L
Bore/Stroke	3.375x3.875 inches 86 x 98 mm
Power	31 hp 23.1 kW
Air cleaner	oil bath
Compression	7.75:1
Rated RPM	1650
Starter volts	6
Oil capacity	4 qts 3.8 L
Coolant capacity	8 qts 7.6 L

Engine Detail
Allis-Chalmers
gasoline
4-cylinder
liquid-cooled
The larger, 149 cubic inch, engine was introduced on the D12 at serial number 3001 in 1961.
Displacement	149 ci 2.4 L
Bore/Stroke	3.50x3.875 inches 89 x 98 mm
Air cleaner	oil bath
Compression	7.5:1
Rated RPM	1650
Firing order	1-2-4-3